Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (16,494)	$ (83,196)	$ (4,926)
Other comprehensive loss:
Foreign currency translation loss, net	(4,683)	(32,561)	(33,004)
Total comprehensive loss	$ (21,177)	$ (115,757)	$ (37,930)